After launching the program, you will see the window below. Open a video file you want to convert. (supports various popular video formats, such as avi, wmv, flv, mov, rmvb, mpg, mp4, etc)

Step 2 - Specify a video clip accurately

You can use "Play/Pause" to locate an approximate position, and then preview the video frame by frame. Specify the start and end time of a video clip you want to convert.

Step 3 - Crop video

Crop is a useful feature, if you don't need the whole picture of original, or you need a smaller gif size.

Step 4 - Delete unwanted frames

Right-click the frames (allow multi-selected), you can delete unwanted frames in the video clip.

Step 5 - Output settings

Config output settings before conversion. You can change output size, add texts and logo here.
Frame rate: Higher value will get more smooth animation, but larger file size.
Replay times: Zero means play once, usually choose "Infinite".
GIf Speed: Lengthen or shorten the interval of every frame, you will get a faster or slower speed than original.

Step 6 - Preview output and save

Click "Convert" button to start conversion. After conversion, you can preview the output, save it if you feel satisfied.

Some useful tips:

1. Why frames lose in output?

Lower frame rate will cause frame lose in output, if you need every frame you choose appear in output, specify the frame rate equal to or greater than original.